Wood turning lathe



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WOOD TURNING LATH E Filed ma 4. 1931 2 Sheets-Sheet 1 N W 6 may, YINVENTOR.

A TTORNEY.

y 1932' R. E. SHAWVEIR woon TURNING LA HE Filed May 4, 1931 A 2Sheets-Sheet lag/E mmvrog JTTORNEY.

Patented May 24, 1932 Roy E. smwvnn, or DALLAS, arms WOOD TURNING LATHEApplication filed Kay 4, 1931 Serial No. 534,918.

This invention relates to wood turning lathes and it has particularreference to lathes designed for .producing various designs for. tablelegs, bedposts and other articles of-a utilitarian nature havingsymmetrical form and appearance and the principal object of theinvention resides in the provision of a new anduseful combination ofelements, including an improved lathe.

1e bed, the combination being capable of turnin articles of thecharacter specified with minute precision equalling that of moreexpensive and complicated machines.

Another object of the invention resides in 16 the provision of animproved tailstock, combined with a novel tracer and cutter mountinghaving means providing for minute adjustments of the cutter bladerelative to the work in accordance with the design of the tracer.

Still another object of the invention resides in its extreme simplicityas compared with machines designed to produce the same character of workfor which the invention is 95 designed, and in addition, the capabilityof the invention of being dismantled for shipment and readiness ofassembly for operation, these being within the range of the ability ofunskilled persons. 7

With the foregoing objects as paramount, the invention has particularreference to its salient features of construction and arrangement ofarts which will become manifest as thedescrlption proceeds, taken inconnection With the accompanying drawings, wherein:

Figure 1 is a perspective view of the invention.

' Figure 2 is a front elevation.

Figure 3 is a sectional view of the cutter and tracer mounting.

Figure 4c is a sectional view on lines 44 of Figure 2.

Figure 5 is a perspective view of the cutter, tracer and the mountingfor these elements, illustrating adjustments, and

Figure 6 is a modified formof cutter and tracer carriage.

' In continuing more in detail with the drawings, it may be firstmentioned that in view of the economical construction adhered tothroughout the entire arrangement, the invention may find use inmanyplaces other than wood working establishments, such for instance as inlarge hotels and the like when it is required to duplicatebroken tablelegs or bedsteads which have become worn or broken. In repairingfurniture and the like,

especially in the case of chairs and bedposts,

the unimpaired parts may be used as patterns by which to reproduce aduplicate part.

The fact that the invention occupies but little space, requires butlittle power to operate and, in view of its simple and economicalconstruction, its use is .well adapted to the character of workspecified In applying the invention for the foregoing uses, the operatoris not requiredto be entirely skilled in the art, which lends a greatervalue to the machine.

, Accordingly, the frame of the device is preferably comprised of aplurality of sections of pipe,,threaded and joined together byconventional Ts and elbows. The pipes provide a ver desirable lathe bedupon which slides the tu ular elements 2. These tubular elements providespacing means for the tailstook elements 3 and 4. The tailstock,

elements are in inverted V form. and stock 3 serves the dual purpose ofproviding a hearing at a for the spindle 5 and through the medium of thearm 6, provides a support for the spindle 7. The spindle 5 servesto holdthe work 8 in its,proper relationship with the pattern, 9,-as shown inFigure 1, while the spindle 7 maintains proper position of the pattern.I Y

A desirable feature of'the construction of the head and tailstockelements lies in the fact that the tailstock elements 3 and 4 are ofprecisely the same construction as the stocks 11 and 12which comprisethe headstock element s, although they are reversely disposed when inoperative position;

Interposed between the headstock elements 11 and 12 is a variable speedpulley 13. This pulley is of a conventional design and it is through themedium of this pulley that ro tation is imparted to the work 8 and byadjusting the driving belt, not shown, on this vided for locking thepulley, the work may be otated at any de-- sired speed.

With particular reference-to Figures 3 and 5, showing the cutter andjf'tracer mountin it is pointed out that there i's provided a co lar 14which is frictionallyslidable upon one of the lathe bed -members iIf-'and about which is a housing 15. A set screw 15a is prohousing 15 innon-rotatable relationship with the' collar 14. The housing 15 entirelycovers? the collar 14, as shown 1n Figure 3 and a cap 16, through themedium of screws 17 securely holds the cap in position on the housiiigl5, yet allowing for rotation of the collar14 when the screw 15a isloosened. An arm-18 is threaded into A forming the lathe bed. Suitablebearings t e the housing 15 in themanner shown. similar arm 19, disposedat an angle relative to the arm 18, has its end passed through a slot band is threaded into the collar 14 in the manner shown in Figures 3, 4and 5 particularly. Accordingly, t he arm 19 is capable of movementrelative 'to the companion arm 18 for adjustmentsasiwill be laterdescribed. I

It will be observed fromthe -foregoing description that in view of; thefact that-the collar 14 is allowed'to'jrotate on the lathe bed member 1within the housing 15, the arms 18 and 19 are capable ofrelativemovement and the arm 18, which carries the knife 20, is held inoperative engagement with the work 8 in the manner to be presentlydescribed. j

The tracer arm 19, supporting the adjustable tracer 21, is heldinoperative position more or less rigidly withthe cutter arm'18 b thearrangement shown in Figures 3 and 5.

his arrangement consists of an arm 22, affixed by means of the screw 23to the housing 15 and extends radialIyoutWard from the housing. Upon theouter end ofthe arm-22 is mounted an interiorl y threaded sleeve 24 andthe sleeve being pivoted at 25, it is capable of displacement on. itsmounting. A threaded arm 26 is received by thesleeve 24 and is rotatablyconnected at a near the up;-

per end of the tracer arm 19. A handle 27 is provided on the rod 26 inorder that the same may be convenientl rotated. 7

Due to the fact that t e arm-22 is. in fixed relation to the collar 15,rotation of the threaded rod 26, will efie'ct movement of the tracer arm19, asshown in dotted lines in Figure 5. When the cutter arm 18 is setto operatively engagethe work rotation of the threaded rod 26 will, ofcourse, move the tracer arm nearer the cutter arm until the tracer restsagainst the pattern. The slot b through which the arm 19 passes permitsof this adjustment. v p

- In Figure 1 a single pattern is employed for turning out a singlepiece of work, but in Figure 2, one tracerand two cutters are shown. Inthe latter case, it is shown how the work is duplicated with a singlepattern and tracer. In order to accomplish this, a

tubular member 28 is interposed between the two mountings which supportthe arms 18 and 19 and is afiixed to the two mountings by screws orother suitable means not shown. Thus it may be seen that by manuallymanipulating the mounting nearest the headstock elements, motion istransmitted to the ,companion mounting to reproduce the pattern on thecompanion piece of work.

With reference to Figure 6 showing a modified form of the arrangementdescribed in the foregoing and shown in Figures 1 to 5 inclusive, itispointed out that a carriage 29 is provided and-is slidable upon theparallel rods 31, formedof angle iron are afiixed to carriage 29 and areprovided with holes through which rods 32 and 33 are passed.

To these rods are afiixed vertical rods 34 carrying a cross head 35,which latter in turn,

supports an' adjustable cutter 36, which en-- gages the work 37. The rod32' extends well beyond the sides of the carriage 29 at both ends andone end engages the pattern 38 as a tracer while the other end affords ahandle by means of which the carriage is moved along the work 37.

In operation, reference being made to Figures 1 to 5 inclusive, thepattern 9 is aflixed in the manner shown, one end being received by thestationary spindle 39, while the opposite end is received by the spindle7 by rotating the wheel 40. A length of suitable material is operativelyheld between the rotatable spindle 41 and the retaining spindle 5, beingso mounted by advancing the spindle 5 upon the end of the material orwork by rotation of the wheel 42. It is understood that the tailstockelements 3 and 4 are frictionally movable along the pipes 1 constitutingthe lathe bed and after having been adjusted to position, screws 43 maybe tightened upon the pipes 1 to prevent undue movement.

The lathe being thus prepared'for operati on, the mounting 15, togetherwith the arms 18 and 19 are adjusted so that the tracer 21 Vwillfrictionally engage the pattern 9 and the knife 20 will be inoperative position to act upon the work. The pulley 13 is set torotating which rotates the work 8 and as the operator moves the mounting'15 slowly longitudinally, the effect of the design of the pattern 9 onthe tracer will transmit such motion as required to duplicate the designon the work 8 through the medium of the cutter knife 20.

A cable 44 has one end connected at d and extends partially around thehousing 15 and suspends a weight 45 as apparent in Figure 1.

The purpose of this arrangement is to aid the operator in holdin thetracer against the pattern 9. While the weight 45 is not necessary tothe successful operation of the 4 improved lathe, it is found to be adesirable feature in relieving the operator of a part of the effortrequired to maintain the tracer operatively a ainst the pattern,althoughthe adjustment a orded through the medium of the threaded rod 26and swivel collar 24 has been found to be quite reliable in maintainingthis engagement.

The arrangement shown is not limited to the character of work describedin the foregoing, it being pointed out that by simply turning the tracer21 and cutter head carrying the knife 20, at right angles relative tothe axes of the arms 19 and 18 respectively, face plate work can be donewith equally as effective results. Moreover, the construction shown anddescribed for accomplishing the foregoing is capable of considerablemodification and such modification as is considered within the scope andmeaning of the appended claims is also considered within the spirit andintent of the invention.

What is claimed is:

1. A turning lathe including a supported frame constructed to providerelatively parallel bed members, head and 'tailstock elements includingpairs of inverted V-members, the apices of which define bearings toreceive spindles for holding work, one of each pair of said membershavlng outwardly extending arms for supportin spindles to receive apattern, a housing avin an inner rotatable member mounted for sli 'ngmovement on one of said bed members, a tracer arm carried by said innerrotatable member, a cutter arm carried by said housing and means foradjusting said tracer arm relative to said cutter arm.

2. A turning lathe including a holding a ments for receiving a patternin parallel reone element of each pair of V-shaped elements forsupporting pattern securing spindles, a tracer and a cutting knife,relatively adjustable means for carrying said knife and tracer and meansto which said latter means are connected for moving the samelongitudinally of the work.

4. A wood turning lathe including the supporting frame having paralleltubular bed members, a pair of inverted V-shaped'elements stationarilymounted upon said bed members, a pair of similar inverted V-shapedmembers held in spaced relationshi and movable relative to said firstV-shaped members, rotatable work holding spindles mounted in the apicesof each pair of V-sha members, means carried by said V-shaped membersfor sup orting similar spindles in parallelrrelations ip with said firstspindles whereby to receive and hold a pattern, means slidable on one ofsaid tubular bed members between said pairs of V-shaped elements andcomprised of relatively adjustable parts, an arm secured to andextending outwardly from each of said parts, a cutting knife carried byone of said arms and engageable with said work, a tracer carried b saidarms and engageable with said pattern, means for adjusting said latterarms and means for rotating said work.

In testimony whereof I afiix my si 'ature.

ROY E. SHA R.

lationship with said work and means mount- 1 ed for sliding movement ina plane parallel with said work and supporting relatively adjustablearms, a cutting knife carried by one of said arms and a tracer carriedby the other of said arms and means for adjusting the tracer armrelative to said cutter arm.

3. A wood turning lathe-including a supporting frame having pairs ofinverted V- shaped elements thereon, one pair of said elements defininga tailstock and capable of movement relative to the" other pairof said'elements, means carried by each pair of V- shaped elements for rotatablysupporting work securing spindles, means integral with the other of too

